Heating system for incubators



April 7, 1925.

H. M. SHEER I HEATING SYSTEM FOR INCUBATORS Filed Feb. 11. 1920 2 Sheets-Sheet 1 April 7, 1925.

H. M. SHEER HEATING SYSTEM FOR INCUBATORS' Filed Feb; 11, 1920 2 Shoots-Sheet 2 Patented Apr. 1 7, 1925.

UNITED STATES 1,532,161 PATENT OFFICE.

IENRY M. SHEER, OF QUINCY, ILLINOIS, ASSIGNOB TO M. SHEER COMPANY, 05

QUINCY, ILLINOIS, A CORPORATION OF ILLINOIS.

HEATING SYS E'Eli'L FOR INCUBATORS.

Application filed February 11, 1820. Serial No. 357,876.

1 '0 all whom it may concern:

lie it known that l, HENnr M. SHEER, a citizen of the United States, residing at My invention relates to an improvement in heating systems for incubators, and the like, and the object is to provide means for conserving heat from a single burner for one or more units, according to the requirements of the operator, one of the ideas of this invention being the creation of uniform pressure of heated air and its rapid circulation through the incubator under automatic1 coi'itrol, whether it be in a single unit or a plurality of units.

The invention consists in a drum in which the air is coniined and heated to a high and uniform degree throughout, and a system of piping into which the heated air from the drum is adapted to discharge under antomatic control, the pipe system providing for a circuitous course of the air throughout the area to be heated, and contemplating a return and final discharge over the point of inlet, where the heat is most intense, so that the movement of the circulating airis further facilitated by the creation of a vacuum or suction in addition to the pressure of the heated air, the two forces co-operating to create a rapid movinnent and circulation of the heated air.

In the accompanying drawings Fig. 1 is a view in perspective showing a inultideck arrangementof incubator units;

Fig. 2 is a plan view of the pipe system;

Fig. 3 is a vertical section through the drum and suction-chamber; and

1 is a detail horizontal section through the suction chamber.

The numeral 1 represents one or more units, three being shown in a multideck arrangement in Fig. 1, on one side of the central heating plant, and it is understood the invention contemplates an equal number of multideck units on the opposite side, provision being made therefor.

The numeral 2 indicates the heating drum. This also is made in as many sections as there are incubator units, in other words there is one section for each incubator unit, and these sections lit together after the manner of an oruinary stove pipe, the uppermost section, of course, being closed at the top, and the lowermost section open the bottom, and provided with an extension 3 capable of being adjusted to the position and height of the burner i beneath the same. Each drumlsection has two outlets 5 on tending in opposite directions, and these are automatically controlled by. bell-crank dampers 6, which have similar thermostatic connection 7, whereby the dampers are regulated by the heat within the incubator.

The pipe system consists of a central pipe 8, two side return pipes 9 and 10 parallel therewith, and end pipes 11, 12 and 13 in general rectangular form with relation to one another. These side return pipes 9 and 10 are in open comn'iunication with one another, the central distributing pipe 8 leading directly out of the end of the rectangular sue.- tion chamber lit, and the pipes 12 and 13 returning from the opposite sides of the pipe system and discharging at opposite points into said suction chamber let.

The supply pipe 15 extends throughout the length of the suction chamber and some distance into the forward end of the central distrilniting pipe 8, where it discharges, it being of considerably less diameter than the latter, and into the pipe 15 one of the outlet pipes 5 of the drum is inserted. The chimney 17 for the heated air leads upwardly from the end of the suction chamber adjacent to the drum. In this way the chimney is directly over the inlet, where the heat of the air from the drum is most infirst through the center, thence to the far thest end, thence to the sides, and back to the suction chamber, and out where the suction or vacuum is necessarily the greatest, where the chimney is located.

Since the heat is greatest through the central distributing pipe 8, an asbestos-lined board 18 is placed thereheneath.

It is understood that the air is forced in under pressure, on the principle of the wellknown water injector. That is to say the supply pipe 15 into which the heated air from the drum is fed extends well into the central distributing pipe -8 and beyond the inner ends of the side return pipes 12 and 13. Hotair is thus forced by pressure in the direction of the rear through the "cen tral distributing pipe 8, but at the same time a Vacuum or suction is created at the inner ends of the return pipes 12 and 13 in the suction-chamber 14, so that while there is constant and uniform pressure from the heating drum through the central distributing pipe 8, there is a vacuum created at the discharge ends of the return pipes 12 and 13 at all times, and by reason of the pressure and suction there is a quick circulation and return, and in consequence uniform heating of the air which finally discharges through the chimney 17 at a point where the heat is the most intense, thus resulting in the creation of a partial vacuum and further suction of the returning and discharging air-at that :point.

I claim:

1. A hot air system including a central distributing pipe, side return pipes parallel therewith, an end pipe connected with the central distributing pipe and with the side return pipes, a supply pipe extending into the central distributing pipe, a suction chambersurrounding said supply pipe and communicating with said return pipes, and a source of heat discharging into said supply pipe.

-2/The combination with an incubator pipes parallel therewith, an end pipe conunit, of a heater having an outlet with means for controlling said outlet, an air heating system including a central distributing pipe, side return pipes parallel there- 40 with, an end pipe connected with the central distributing pipe and with the side return pipes, a supply pipe extending into the distributing pipe, and into which the outlet from the heater discharges, and a 5 suction chamber surrounding said supply pipe and communicating with said side return pipes.

3. lhe combination with an incubator unit, of an alr heating system including a 50 central dist-rlbut-ing pipe with side return nected with the central distributing p1 and with the side return pipes, a sup pipe extending into the distributing p a suction chamber surrounding ,1:

id supply pipe and eonnnunicating with said side re- HENRY M. SHEER. 

